AV pattern strabismusHorizontal strabismusThere was no significant change in squint angle in horizontal direction, but there was a significa
AV pattern strabismus
There was no significant change in squint angle in horizontal direction, but there was a significant change in oblique angle in different positions in the vertical direction, which is called AV. For example, when the external oblique upward gaze angle is significantly greater than the downward viewing angle, the two eyes of the eyes of the English letter V shape, this situation is V type exotropia or external oblique V sign. The oblique angle of view was significantly higher than that of the oblique angle when upward looking, and the letter was A, which was A A or exotropia.
The occurrence of type AV strabismus may be related to the abnormal anatomy of extraocular muscles. The treatment should not only deal with horizontal strabismus, but also consider the non common factors in the vertical direction.